Improvement in wood pavements



parts.

denied glatte para ama.

OF NEW YORK. N. Y.

IlVIPROVEME-N'l IN WOOD PAVEMENTS.

The Schedule referred to in these Letters Patent and making part of the same.

-of' which the following is a full, clear, and exact description,-1'eference being had tothe accompanying drawing forming part ot" this specification, and `in whichx Figure 1 represents a plan of a broken section ol' a wood pavement, constructedin accordance with my invention;

Figure 2, a tranverse section, taken as indicated by the line :da: in fig. l;

Figure 3, a view in perspective of one of the blocks detached; and

Figure 4, asimilar view of` one of the wedge-shaped strips, which lie intermediate of' the blocks.

Similar letters of' reference 4indicate corresponding My improved pavement is made up, in part, of wooden blocks, out away on each side in a graduallydeepening manner, from a line or point near their tops to a line or point neartlieir base, where the recesses thus made on opposite sides form acute angles below, but none above.

Between these blocks, that are arranged in parallel rows, at suitable distances apart, and so as to break joint, are interposed wooden strips, of an inverted blunt wedge-shape in their transverse section, and so that they rest attheir wider and lower edges on the shoulders formed bythe recesses in the blocks, but do not enter, attheir upper and narrower edges said blocks, and so that they keep the adjacent parallel rows of blocks separated from each other, and leave a space for tar and gravel, or other suitable filling, between the blocks on or over the upper edges of the strips, and a space or channel beneath them for drainage and ventilation.

A A wood pavement thus made provides, in a mostV perfect manner, for expansion and contraction, is

strong, there being no acute angle or cut made inthe blocks at the upper portions'of the'reeesses, or binding of the locking-strips by entry at such parts, and but little tar and'gravel illling necessary, while a very solid character is given to the pavement, and the blocks and strips mutually serve to keep each other down, or from being raised independently, of each other.

In the accompanying drawing- A A represent the wooden blocks, arranged in parallel rows, at suitable distances apart, and constructed as described, with recesses or reversely-inelined sides a a from near their tops to their base portions b, where said recesses form acute angles o.

B B are the locking-strips, of a blunt wedge-shape in their transverse section, and resting at their lower and wider edges on the shoulders of the bases formed by the acute angles of the recesses in the blocks, but not entering in acute angular lock said blocks above, and stopping short ofthe tops of the blocks, to forni spaces d for tar and gravel, or other suitable filling.

These locking-strips B B may be of greater length than the blocks, and said blocks A A rest either upon planks C, or upon a. concrete or other bed.

The base portion b of the adjacent blocks are arranged at a suitable distance apart, to provide for expansion, and to form channels e, for the circulation of air and passage of vwater, whereby the better preservation of the pavement is secured. p

What is here claimed,and desired to be secured by The arrangement of the wcdge-shaped keys B, in the angular recesses a c of the blocks A, so as te form passages e below said keys for ventilation and drain,- age, and spaces d above them, to receive gravel or cement, as set fort-h.

A. WARNER PLAT'I.

Witnesses:

FRED. Haynes, Fam). TUscH. 

